The TWSBI ECO Blue Slate Fountain pen features onyx-colored trim and nib, making this a beautiful addition to anyone’s collection of good everyday writing instruments.

TWSBI ECO fountain pens have stainless steel nibs and use a piston filling system. The barrels are clear so you can see the amount of ink and the cap includes an inner cap that provides a perfect seal when the pen is not in use.

Note: Please take care if removing/adding the nib as it is very fragile.

How to Choose a Nib Size:

• If you write small, go with Extra-Fine
• For everyday use, Fine is a great choice
• If you tend to write on the larger size, Medium is perfect and does provide a smoother ink flow
• Bold is for statements – Sign a check, write a header or show off your shimmering/sheening ink
• Stubnibs are used for an italic/calligraphy writing style with the down strokes being wide and the side strokes thin.